5,151,908 9/1992 Huber. pression unit having wider end portions Separated by a 5,153,762
10/1992 Huber. narrower intermediate portion. The displacement Sensor 5,166,821 11/1992 …

An optical-wavelength division multiplexing System, method and branching unit. The
arrangement drops one, or more than one, predetermined wavelength signal (0, 2) from a …

(57) ABSTRACT A wavelength division multiplexing (WDM) optical trans mission System
includes a node having a wavelength de multiplexer, an optical Switch connected to the …

A method and system for data transmission in a 2-fiber ring network having a plurality of
network nodes wherein working signals are bidirectionally transmitted between terminal …

A wavelength division multiplexing (WDM) optical transmission system includes a node
having a wavelength-demultiplexer, an optical switch connected to the demultiplexer, a …

An extract-and-insert optical wavelength division multi plexer includes a broadcaster (D1) for
applying an incoming multiplex signal to N outputs, a combiner-diffuser (D2) for …